package com.crm.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginFilter implements Filter {

	public void destroy() {
	}

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req =(HttpServletRequest)request;
		HttpServletResponse resp =(HttpServletResponse)response;
		String path = req.getServletPath();
		if(path.indexOf("login.jsp") == -1){
			if(path.indexOf("register.jsp") >= 0){
				chain.doFilter(request, response);
			}else{
				Object object = req.getSession()
						.getAttribute("loginUser");
				if(object == null){
					resp.sendRedirect("login.jsp");
				}else{
					chain.doFilter(request, response);
				}
			}
		}else {
			chain.doFilter(request, response);
		}
	}

	public void init(FilterConfig arg0) throws ServletException {
	}

}
